... ozone, oxygen, sunlight and aging, long using life up to 10 years3. Good electric insulator, dielectric constant 3 - 3.2, breaking down ... voltage between 20 - 50kV/mmApplication:1) Electric insulation: silicone rubber coated fiberglass cloth features high grade of electric insulation and ... requirements, such as red, yellow, gray, black, etc. Silicone coated fiberglass fabric